American Journal of Science

 

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American Journal of Science 
References 
[1].Mengliyev
B., Bobojonov S., Hamryeva Sh. 
National corpus of the Uzbek language. “Ma'rifat” 
newspaper; April 25, 2018, No33 (9098) 
[2]. Sinclair J., Svartik J. (Ed). The automatic analysis 
of corpora. Directions in Corpus Linguistics 
(Proceedings of Nobel Symposium 82)
Berlin: Mouton de Gruyter. 1992. 
[3]. wikipedia.org 
 
Inter correlative relation of life duration of 
silkworm female-moths with selection signs. 
S.N.Navruzov, B.U.Nasirillaev, U.S.Khudayberdieva
 
S.N.Navruzov - docent of “Silkworm breeding and mulberry growing” 
chair of the Tashkent state agrarian university, 
B.U.Nasirillaev - the head of “Pedigree works” laboratory, Scientific-
research institute of sericulture. 
U.S.Khudayberdieva - doctoral candidate of the Tashkent state agrarian 
university.
Annotation 
In this article the degree of interrelation between female-moths life 
duration and such valuable signs as productivity, viability and technologic 
parameters were defined and also the results of obtained data during this 
research were given. Selection work on a certain race during breeding 
work must not decrease signs of the other second stage. Close correlative 
relations between such indices as hatchability, viability, resistance to 
diseases, average cocoons mass, cocoons shell mass and percent cocoon 
shell were determined. In selection and silkworm breeding competitive 
silkworm eggs production and full provision the needs of silkworm farms 

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American Journal of Science 
of our republic by using these features can be achieved. 
Perspective races Marvarid and Line-27 were experimental strains 
in this work which we divide into 3 groups-gradations according to their 
longevity that is the longest lived moths from 16 to 24 days, medium lived 
moths from 9 to 11 days and the less lived moths from 5 to 6 days.